chore(deps): update dependency canvas to v3

Author: renovate[bot]

Diff for: package.json

@@ -54,7 +54,7 @@
   },
   "devDependencies": {
     "acorn": "0.5.0",
-    "canvas": "2.11.2",
+    "canvas": "3.1.0",
     "del": "4.1.1",
     "gulp": "3.9.1",
     "gulp-cached": "1.1.1",